Atomistic spin dynamics of low-dimensional magnets

TL;DR

This paper combines first-principles calculations and atomistic spin dynamics to study the magnetic properties of low-dimensional ferromagnets, achieving good agreement with experiments and predicting spectra for unmeasured systems.

Contribution

It introduces a comprehensive approach to evaluate magnetic properties of low-dimensional magnets, including temperature effects and spectral predictions, with validation against experimental data.

Findings

Good quantitative agreement with experimental spin wave spectra

Predicted magnon spectra for unmeasured systems

Estimated temperature effects on magnetic excitations

Abstract

We investigate the magnetic properties of a range of low-dimensional ferromagnets using a combination of first-principles calculations and atomistic spin dynamics simulations. This approach allows us to evaluate the ground state and finite temperature properties of experimentally well characterized systems such as Co/Cu(111), Co/Cu(001), Fe/Cu(001) and Fe/W(110), for different thicknesses of the magnetic layer. We compare our calculated spin wave spectra with experimental data available in the literature, and find a good quantitative agreement. We also predict magnon spectra for systems for which no experimental data exist at the moment, and estimate the role of temperature effects.